Orifice Plate - Permanent Pressure Drop For Incompressible Fluids

Permanent Pressure Drop For Incompressible Fluids

For a square-edge orifice plate with flange taps:

\frac{\Delta P_p}{\Delta P_i} = 1 - 0.24 \beta - 0.52 \beta ^2 - 0.16 \beta ^3

where:

= permanent pressure drop
= indicated pressure drop at the flange taps

And rearranging the formula near the top of this article:

\Delta P_i = P_1 - P_2 = \frac {Q^2 ~\rho~ (1 - \beta ^4)} {2 ~C_d^2~ A_2^2} = \frac {Q^2 ~\rho~ (1 - \beta ^4)} {2 ~C_d^2 ~A_1^2 ~\beta ^4}

Read more about this topic:  Orifice Plate

Famous quotes containing the words permanent, pressure and/or drop:

    “It was hard for an American to understand the contented acceptance by English men and women of permanent places in the lowest social rank.”
    —Virginia Crocheron Gildersleeve (1877–1965)

    “Under the pressure of the cares and sorrows of our mortal condition, men have at all times, and in all countries, called in some physical aid to their moral consolations—wine, beer, opium, brandy, or tobacco.”
    —Edmund Burke (1729–1797)

    “One that loves a cup of hot wine with not a drop of allaying
    Tiber in’t.”
    —William Shakespeare (1564–1616)